Concrete-mixing apparatus



v A. J. POWERS.

CONCRETE MIXING APPARATUS.

APPLICATION FILED FEB. 24, I919.

Patented Feb. 24, 1920;

2 SHEETS-SHEET l- MU W V0 Mr J a f w N x u M E m d m m m ATTORNEYS A. J. POWERS.

. CONCRETE MIXING APPARATUS.

APPLICATION FlLiED FEB, 24, I919.

Patented Feb. 24, 1920.

2 SHEETSSHEET 2.

INVENTOR A TTORNE Y8 ANTHONY JAMES POWEREl, OE NEVV ORLEANS, LOUISIANA.

CONCRETE-MIXING APPARATUS.

Specification of Letters Patent.

Patented Feb. 24, 1920.

Application filed February 24:, 1519. Serial No. 278,698.

To all whom it may concern Be it known that I, ANTHOXY J. Pownns, a citizen of the United States, and a resident of New Orleans, in the parish of Orleans and State of Louisiana, have invented a new and Improved Concrete-Mixing Apparatus, of which the following is a full, clear, and exact description.

Among the principal objects which the present invention has in view are to utilize the time employed in elevating acharge of cement for mixing the same; to employ the surplus power of an elevator employed in lifting concrete for mixing the same; to provide means for dumping the mixer and the load carried thereby when the same has,

arrived at its destination; to discontinue and resume the operation of the mechanism at will; and to simplify the construction and the operation thereof.

Drawings.

Figure l is a vertical section of a concrete mixer apparatus constructed and arranged in accordance with the present invention, the section being taken as on the line 11 in Fig. 3; V r

Fig. 2 is a horizontal section of the same, the section being taken as on the line 2-2 in Fig. 8;

Fig. 3 is a vertical section of the same, the section being taken as on the line 3 3 in Fig. 2;

Fi ff is a detail view on an enlarged scale showing in section a fragment of the tumbler and the supporting tumbler is mounted.

As seen in the drawings, a double-ended tapered tumbler 9 is centrally provided with a circular channel rail 10 in which rests a ring gimbal 11. The gimbal 11 is provided with a suitable number of supporting rollers 12 onwhich the rail 10 turns. The gimbal 11 has extended therefrom trunnions 13. Bearing blocks having the caps 14: are mounted on cross rails 15 of the elevator structure. Guide blocks 16 are eXtended from the rails 15 to fit within channeled uprights 17 The platform and cage of the elevator are constructed in the usual manner, except that the platform at one side thereof is out away to form a delivery opening 18. The cage is lifted by acable 19 and hoisting mechanism connected therewith.

giinbal in which the The tumbler is provided with a loading door 20, which is closed by a latch 21. The charge for the tumbler is introduced through this door. Adjacent the door 20 at the tapered end 22 thereof, an opening is formed for delivering the contents'of the tumbler after the same has been mixed.

To rock the tumbler to the position shown by dotted lines in Fig. where the end in position to deliver the contents of the tumbler through the opening 18 in the platform of the elevator, a lever 23 is fixedly mounted on one of the trunnions 13. Adjacent the lever or handle 23 quadrant 24: secured to the elevator structure 15 is pro vided with nicks into which the end of a latch bolt 25 enters. The spring 26 operates the bolt 25.

The hand grip 27 rocks the short lever, which is operatively connected withthe bolt 25 to lift the same from the nicks in the quadrant 24-. when the hand grip 27 is retracted.

WVhen the latch bolt the quadrant 24, the lever 23 may be drawn to the position shown in dotted lines in Fig. 3, for uptilting the tumbler 9 to deliver the contents thereof. When the tumbler is up turned for delivery of the contents, the gear wheel 28 is lifted out of engagement with the pinion 29. The pinion 29 is disposed at the end of the driving shaft 30. The shaft clutch member 34;.

is released from yoke end 36 whereof engages a yoke collar on the shaft 30. The lever 35 is operated through the medium of a controlling rod 37,

30 and 32 are alined and are supported in hearings in the standards 39 and 40. Power is applied to the pinion 31 through the medium of-the rack bar 41, which, as seen best in Figs. 2 and 3 of the drawings, is mounted on a vertical rail 42 at the side of the elevator runway.

When provided with an apparatus constructed and arranged as above set forth, the operation is as follows: When the elevator is in the lowered position shown in Fig. 3, the door 20 is thrown back and within the tumbler 9 is placed the usual charge of cement gravel or other specified ingredients,

and water. The door 20 is closed and the signal is given to hoist the elevator to the point where the cement is to be deliveredr The attendant grasps the handle 38 of the rod 37 and throws the lever 35 and clutch member 33 connected therewith into position where the said clutch member engages the clutch member 34 of the shaft 82. As the elevator rises, the pinion 31 is rotated by the rack bar 41. The result of the action is to rotate the tumbler and to mix the contents within the same. The tapering ends of the tumbler have the effect of causing the materials in the tumbler to flow toward the center or larger diameter thereof.

When the elevator has arrived at the delivery station for the tumbler, the wheelbarrow or other receptacle is run under the opening 18, provision having been previously made to accommodate the same. The attendant then grasps the lever 23 and the hand grip 27 and operates the said lever to tilt the tumbler to the position indicated by dotted lines in Fig. 3. The mixed charge from the tumbler 9 is now emptied therefrom. If desired, the tumbler is tilted sufficiently to prevent the meshing of the teeth 28 and pinion 29, during the descent of the elevator. Also it Will be observed that if the height to which the elevator is lifted is unusually great and it is not desirable to mix the charge as thoroughly as the continued action would result, the clutch member 33 is withdrawn from engagement with the member 34:, with the result that the driving mechanism is suspended.

Olaims.

1. An apparatus as characterized comprising a rotatable receptacle arranged to tilt tatable receptacle as said support is moved,

and means for manually controlling said transmission mechanism, said mechanism being rendered inoperative on the tilting of the rotatable receptacle.

2. A concrete mixing apparatus comprising the combination with an elevator and means for raising and lowering the same; of a tiltable tumbler rotatably supported by the elevator, means to support the tumbler to tilt and permitting rotation therein, driving means operable by the raising and lowering of the elevator to rotate the tumbler, means for tilting the tumbler and including means for holding the same at different inclinations, said driving means being adapted to be automatically thrown out of engagement upon the tilting of the tumbler into a discharged position, and additional means for throwing said tumbler out of operation.

3. A concrete mixing apparatus comprising the combination with an elevator and means for raisin and lowering the same; of a tumbler rotatably supported by the elevator, means to support the tumbler for tilting driving means operable by the raising and lowering of the elevator to rotate. the tumbler, and means for tilting the tumbler and holding the same in different in clined positions, said driving means being adapted to be thrown out of engagement upon the tilting of the tumbler into a discharge position.

t. In a concrete mixing apparatus, a support movable up and down, a receptacle pivoted at its center of length in said support, a gear wheel on the receptacle adjacent one end thereof, a shaft mounted in the support, a pinion on the shaft and meshing with the gear wheel of the receptacle, means for operating the pinion by the up and down movement of the support, and means for tilting the receptacle whereby the receptacle will cease rotating and its contents discharged.

5. In a concrete mixing apparatus, a support movable up and down, a receptacle having conical ends and pivoted at its center in the support, a gear wheel on one end of the receptacle, a shaft mounted in the support, a pinion on the shaft and meshing with said gear wheel, a second shaft, a clutch connecting the shafts, a pinion on the second shaft, a stationary rack with which the last named pinion engages, and means for tilting the receptacle.

6. A concrete mixing apparatus, comprising upright guide members, a frame-like support mounted to slide up and down in the guide members, a receptacle having conical ends and pivoted at its center of length in the support, a gear wheel on one end of the receptacle, a shaft mounted in the support, a pinion on the shaft meshing with the said gear wheel, a second shaft, a clutch connecting the shafts, means for operating the clutch, a pinion on the second shaft, an upright rack with which the last named pinion meshes, and means for tilting the receptacle.

ANTHONY JAMES POWERS. 

